Products
Silicon Metal Size 10-100mm
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Shape: Lump Powder Particles
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Chemical Composition:Si Fe Al Ca P
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Size:0~1mm 1~3mm 10mm~50mm 10~60mm 10~100mm .etc
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Package: Ton bag or customized according to customer requirements
Silicon Metal 10-100mm lump is a mainstream large-particle industrial silicon. It is produced by smelting silica and carbon reducing agents in submerged arc furnaces, then crushing and screening into standard 10-100mm irregular lumps.
This size is specially designed for large furnaces and manual feeding processes. Compared with fine powder and small particles, it features stable dissolution speed, low dust and low loss. We supply a full range of industrial silicon grades (Silicon97 / Silicon553 / Silicon441 / Silicon3303 etc.), which are widely used in steelmaking, aluminum alloy casting, refractory manufacturing and other fields. It is a cost-effective bulk raw material for traditional and large-scale industrial production.

chemical composition
| Grade | Si ≥ (%) | Fe ≤ (%) | Al ≤ (%) | Ca ≤ (%) | P (PPM) | Main Application Orientation |
|---|---|---|---|---|---|---|
| Silicon 97 | 97.0 | 1.5 | 0.5 | 0.3 | - | Low-cost bulk metallurgy, general refractory |
| Silicon 553 | 98.5 | 0.5 | 0.5 | 0.3 | - | Ordinary aluminum alloy, conventional steelmaking |
| Silicon 441 | 99.0 | 0.4 | 0.4 | 0.1 | - | Mid-to-high-end aluminum alloy, organosilicon |
| Silicon 421 | 99.2 | 0.4 | 0.2 | 0.1 | - | Precision alloy, electronic auxiliary materials |
| Silicon 411 | 99.2 | 0.4 | 0.1 | 0.1 | - | Low-aluminum demanding industrial products |
| Silicon 3303 | 99.3 | 0.3 | 0.3 | 0.03 | ≤50 | Polysilicon, high-end electronic raw materials |
| Silicon 2502 | 99.5 | 0.25 | 0.25 | 0.02 | ≤40 | Ultra-high purity alloy, semiconductor |
| Silicon 2202 | 99.5 | 0.2 | 0.2 | 0.02 | ≤40 | Advanced semiconductor & photovoltaic materials |
Standard Size: 10-100mm lump; Optional sizes: 0~1mm, 1~3mm, 10~50mm, 10~60mm.
Standard Packaging: 1-ton moisture-proof woven bag + pallet loading; customized sealed drums and small packages for export and laboratory use.
Storage Requirements: Store in dry and ventilated closed warehouse. Keep away from rain, moisture and corrosive gas to prevent surface oxidation and performance decline.
Application characteristics
Stable Reaction & Easy Control: Moderate dissolution speed, easy to grasp feeding quantity and time, suitable for traditional and semi-automatic production lines.
Low Dust & High Safety: No dust explosion risk like fine powder, reduce material loss and meet industrial hygiene standards.
Cost Saving: No secondary crushing required for most scenarios, cut downstream processing cost and energy consumption.
Wide Compatibility: Matches various furnace types and feeding tools, flexible for multiple production processes.
Stable Batch Quality: Strict smelting and screening control, small composition fluctuation between batches.

Diversified Industrial Applications
Steelmaking Industry
10-100mm lump silicon metal is the preferred material for large converter and electric furnace. It acts as deoxidizer and alloying additive. The stable dissolution process continuously removes oxygen from molten steel, reduces oxide inclusions and pores. It stabilizes molten steel composition, improves the strength and toughness of carbon steel and low-alloy steel. Suitable for rhythmic batch feeding in large steel production lines.
Aluminum Alloy Casting
Ideal for sand casting and gravity casting processes. When added to aluminum melting furnaces, it dissolves gradually to avoid sharp composition fluctuations. It optimizes molten aluminum fluidity, enhances the hardness and corrosion resistance of aluminum products. Widely used for engine cylinders, large structural aluminum parts and other heavy castings.
Refractory Materials Manufacturing
Used as skeleton additive for refractory bricks and castables. Large particles enhance the overall structural strength of refractory products, resist high-temperature slag erosion and thermal shock. Extend the service life of steelmaking furnaces, glass kilns and other high-temperature equipment.
Magnesium Smelting & Alloy Production
Serves as reducing agent and basic silicon source for magnesium alloy production. Stable particle size ensures uniform reaction, reduces production fluctuation and controls comprehensive cost.
Primary Raw Material for Deep Processing
Can be further crushed into powder or small particles for organosilicon synthesis and polysilicon preliminary purification, meeting the supporting demands of downstream deep-processing enterprises.

FAQ
Q1: What are the advantages of 10-100mm lump silicon metal compared with fine particles?
A: It has lower dust, safer operation, more stable dissolution speed, no need for secondary crushing, and saves downstream processing costs. It is more suitable for large furnaces and manual feeding.
Q2: How to select the right grade of 10-100mm silicon metal?
A: Choose 97 grade for low-cost bulk production; 553/441 for aluminum alloy and ordinary steelmaking; high-purity grades 3303/2202 for electronics and high-end chemical industries.
Q3: What are the storage requirements for lump silicon metal?
A: Store in dry and ventilated warehouse, avoid moisture and rain to prevent surface oxidation and affect use effect.
Q4: Can you provide test samples and customized products? What is the delivery time?
A: Free test samples are available. Standard in-stock goods are delivered within 7–15 working days; customized products take 20–30 working days.
Q5: What is the MOQ and payment term?
A: The minimum order quantity is 25 tons or one full container. We support T/T and L/C payment terms.
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